🚀 go-pugleaf

In article <BxL9qH.M45@utdallas.edu> goyal@utdallas.edu (Mohit K. Goyal) writes:

>Hello.

>I have heard/read that Windows NT & NeXTSTEP 486 will *require* 486 chips.

>Is it really possible to write software that will run on a 486SX that
>will not run on a 386DX(or SX)?

>That seems silly, since a 386DX-40 performs about 95% of a 486SX-25.
>(ie-no real world difference) and since 386-40's are selling like
>hotcakes, & mathco's are cheap, it would seem silly to exclude this
>market, the whole 386 market in fact, from you product.

Remeber that the 2 or 3 opcodes that are different between a 386+387 and a 
486 are for MULTITASKING OPERATING SYSTEMS, and MULTIPROCESSOR support. 
Therefore, it kind of makes sence for a new 32bit operating system (
NeXTSTEP) to require an i486 processor.  Windows NT, by the way, requres a 
386-25 or grater, not a 486.
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